Apparatus for extracting metal from ores and the like



H. H. GODFREY. i APPARATUS FOR EXTRACTING METAL FROM ORES AND THE LIKE.

APPLICATION FILED AUG.4, i919. 1,347,026.

' 15TH 'ofray,

BY I

ATTORNEYS'.

f H. H. GODFREY. APPARATUS FOR EXTRACTTNG METAL FROM oRES AND THE LIRE.

APPLCATON FILED AUG.4, |919. 1,347,026. Patented July 20, 19%.

2 SHEETS-SHEET Z.

INVENTOR.

Hf/.Gbdfreyl A TTORNEY UTED STATES PATENT FFICE.y

HAROLD H. GODFREY, OF LOS ANGELES', CALIFORNIA.

APPARATUS FOR EXTRACTING METAL FROM CRES .AND THE LIKE.

Application led August 4,

To all Iwhom t may concern:

Be it known that I, HAROLD H.- GODFREY, a citizen ot' the United States, residing at Los Angeles, in the county of Los Angeles and State ot' California, have invented new and useful lmprovements in Apparatus for Extracting Metal from Orcs and the like, of which the following is a specification.

My object is to make an improved apparatus for extracting metal from ores and the like, and my invention consists-of the novel features herein shown, described and claimed.

Figure 1 is a perspective of an apparatus Jfor extracting metal from ores and the like in accordance with the principles of my invention.

Fig. 2 is a vertical longitudinal sectional detail on the line 2-2 of Fig. 1.

Fig. 3 is a vertical cross section on the line 3-3 of Fig. 2.

'l' he central support 1 is rigidly mounted on crosspieces 2 and 3. The support 1 is a heavy timber rectangular in cross section and straight, and the crosspieces 2 and 3 serve to make a wide base so as to rigidly mount the support 1.

rl`he bottom 4 has bearing plates 5 and on each side of the support 1, and links 7 and 8 connect the bearing plates 5 and 6 to pivots l) and 1() rigidly fixed to the sides ot' the support 1. Side bars 11 and 12 extend upwardly from the sides of the bottom 4 and a head board 13 extends across the head end ot' the bottom 4 between the side boards 11 and 12. The bottom 4 is covered with an amalgam plate 14 and the negative pole of an electric circuit is connected to the amalgam 14 by a wire 15 so as to make a cathode.

rThe shaft 1G is mounted in rigid bearings 17 and has aily wheel 18 and a driving pulley 19driven by a belt 20 and an ec.- centric or crank 21. The post 22 is pivotally mounted upon a pin 23 fixed in a bifurcated bearing 24 mounted upon a block 25, and the post 22 has a notch 26 extending from its upper end in which the eccentric 21 operates, so that as the shaft 16 rotates'the upper end of the post -22 is vibrated.

A link 27 is connected to the pivot pin 28 which extends through the upper end ot the link 8, and a bolt 29 is inserted through the front end of the link 27 and through a desired one ot' the holes 282 in the post 22,

so that by moving the' bolt 29 from one hole Specification ot' Letters Patent.

Patented July 20, 1920. 191e. serai No. 315,272.

282 to another the stroke of the table may be accurately adjusted to suit. The holes 282 are formed in a row concentric to the pin 28 and extending up and down in the post 22, so that by moving the bolt 29 downwardly the stroke of the table is shortened.

Brackets 283 are secured to the head board 13 and straddle the post 22 to hold the post upright. The operation of the belt 20 operating the eccentric 21 shakes the table endwlse.

A cleat 281 is removably mounted upon the amalgam plate 14 at the tail end of the table so as to prevent the material from sluicing. Thel head end of the table is slightly higher than the tail end, and the 12n8aterial is to be discharged over the cleat A trough 30 is mounted above the side board 11 and has an intake spout 31 in which the pulp is to'be discharged and has a series of perforations 32m its bottom for distributing the` pulp along the table just inside of the'side board 11. The table slopes downwardly from the side board 11 toward the side board 12, so that the pulp will run crosswise ofv the table and crosswise of the line of reciprocation. The trough 30 extends halr" way from the head of the table toward the other end.

Bars 33, 34 and 35 extend across the table and the trough 3() is mounted upon the bars 33, 34 and 35. Adjusting'screws 36 and 3'? extend upwardly from the side boards 11 and 12 through the ends of the bars 33. 34 and 35, there being adjusting nuts 38 upon the screws below the bars and adjusting nuts 39 upon the screws above the bars. so that by' manipulating the nuts 38 and 39 the bars may be raised or lowered.

A perforated sheet metal plate 40 is attached to the bars 33, 34 and 35, said plate .fitting against the lower 'faces ot' the bars, so that the plate 40 is below the level of the upper edges ot' the sides 11 and 12, and so that when the pulp is Howing upon the table the plate 40 will be in contact with the upper face ot the pulp.

The positive pole of the electric circuit is connected to the plate 40 by the wire 41 so as to make an anode. A

lin the practical operation the electric circuit is turned on and the belt 20 operated from any suitable source ot power to operate the shaft 16 and reciprocate the table, and as the table lls with pulp the electric eurrent will flow from the anode 41 through-the pulp to the cathode 15 and the gold will be preclpitated upon the amalgam plate 14 and the Water and'mud will overflow the cleat 29.

loaded with gold to the desired extent thev plate 40 may be raised and the gold removed from the amalgam plate.

Thus l have produced an apparatus for extracting metal from ore and the Alike comprising an ore concentrating shaking table covered with an amalgam plate electrically connected to form a cathode, and a second plate adjustably and removably mounted above and parallel with the amalgam plate and electrically connected to form an anode.

It is obvious that the anodes and cathodes may be reversed. rlhe anode is made out of iron when gold and silver is extracted, but when other metals besides gold and silver are treated suitable metals are used for the anode and cathode. It will be understood that the metal contained in the pulp must be treated by a suitable electrolyte to dissolve the same, for instance, for gold, potassium eyanid is used, and for copper, sulfuric acid, or the like, as will be skilled in the art.

It is hardly necessary to mention the fact that the electric current passes from the anode to the cathode through the pulp, and

through the pulp only. The supporting bars spacing the anode from the cathode are -1nade either of non-conducting material or are insulated so as to prevent a current n passing therethrough.

Various'changes may be made without departing from the spirit of my invention asv claimed.

I claim: i

1. An apparatus for extracting metal from ore including an ore concentrating shaking table inclined longitudinally and transversely, said table being covered with a cathode, and an anode spaced above said cathode.

2. An apparatus for extracting metal from ore including an ore concentrating shaking table, a cathode covering said table, and a plate spaced above and parallel to said table forming an anode.

3. An apparatus for extracting metal from ore including an ore concentrating shaking table inclined longitudinally and transversely, a cathode covering said table, and a plate spaced above and parallel to said table forming an anode.

4. An apparatus for vextracting metal understood by those from ore including an ore concentrating shaking table, a cathode covering saidtable,

a plate spaced-above said table forming ananode, and a trough mounted on said table .to discharge into said table Vat one side of said plate.

7 .An `apparatus for extracting metal from ore including an ore concentrating Ashaking table, inclined longitudinally and transversely, a cathode covering said table, a plate spaced above said table forming an anode, and a trough mounted on said table at the higher side thereof to discharge into said table between its higher side and the adjacent edge of said plate.

8. An apparatus for extracting metal from ore including an ore concentrating shaking table, a'cathode covering said table, bars extending across said table, a plate secured to said bars above ,the bottom of said table and forming an anode, screws upstanding from the sides of said table-through the ends of said bars, and nuts on said screws above and below said bars.

9. An apparatus for extracting metal from ore including an ore concentrating shaking table, a cathode covering said table, bars mounted on said table and extending thereacross, a plate secured to said bars above said table and forming an anode, and a trough mounted on said bars at one side of the table for discharging into the table `between said side and the adjacent side edge of said plate.`

10. In an 'apparatus for extracting metal from ore, an ore concentrating shaking table, a cathode covering the bottom of said table, an anode above said cathode, a post pivotally mounted at its lower end and provided with a plurality of holes, a link connected at one end to said table and a pin for pinning the other end of said link through any of said holes to said post for adjusting the stroke of the table.

ln testimony whereof l have signed my name to this specification.

HAROLD H. GODFREY. 

